Luke Combs wasn't supposed to perform on Jimmy Kimmel Live until later this fall; however, following Sunday night's (Oct. 1) shooting at the Route 91 Harvest Festival in Las Vegas, Nev., Combs and his band used Kimmel's stage to honor the victims of the tragedy. Readers can press play above to watch their performance of "Used to You," which aired Monday night (Oct. 2).

Prior to Jimmy Kimmel Live's Monday night episode, Combs explained via Twitter that he was at Kimmel's studio to tape a performance to air at a later time; however, Kimmel asked Combs to perform for Monday night's episode in honor of the Route 91 Harvest Festival shooting victims, and Combs "immediately agreed." "Used to You," he knew right away, would be the perfect song; it tells the story of losing someone and "never get[ing] used to you being gone."

"Music is a healer. In this overwhelming darkness, I believe we will find hope when we rise together," Combs writes. "Fans, it is the blessing of my life to get to make music with you and for you every day. Tonight, may we find light and hope in the chaos."

Country Stars Respond Following Route 91 Harvest Festival Shooting

Combs was backstage at the Route 91 Harvest Festival on Sunday when Stephen Paddock began shooting into the crowd from his hotel room at Mandalay Bay. The singer recalls many concertgoers' and crew members' initial confusion over what the gunshot noises actually were. Combs, who begins his headlining Don’t Tempt Me With a Good Time Tour on Tuesday night (Oct. 3), is determined to not let the shooting — which killed more than 50 people and injured more than 500 people — make him live in fear.

“I don’t want to be scared, or put any shows of mine on hold, because I feel like that’s what this person wants to happen,” says Combs. “He wants everybody to be scared and be afraid. And obviously we need to be strong in times like this ..."

During his Monday night show, Kimmel himself also made an emotional, passionate plea, during his opening monologue, to lawmakers to enact laws to stop such senseless acts of violence. The late-night host, who is from Las Vegas, called the shooting "another terrible, inexplicable, shocking and painful tragedy," and noted that his musical guest Combs was present during the shooting.

"We pray for the victims and for their families and friends, and we wonder why, even though there's probably no way to ever know why ... It’s the kind of thing that, it makes you want to throw up or give up. It’s too much to even process," Kimmel said during his monologue, which readers can watch in full below. "Of course there's something we can do about it. There are a lot of things we can do about it, but we don’t, which is interesting. Because when someone with a beard attacks us, we tap phones, we invoke travel bans, we build walls, we take every possible precaution to make sure it doesn’t happen again, but when an American buys a gun and kills other Americans, then there’s nothing we can do about that."